Shared Flashcard Set

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Skin Ch 8
skin
17
Pathology
Advanced
05/15/2018

Additional Pathology Flashcards

 


 

Cards

Term
Keratinocytes - epidermis
Definition
thick protein- barrier against pathogens
Term
Melanocytes - epidermis
Definition
synthesize pigment melanin
Term
Langerhans cells - epidermis
Definition
Immune functions
Type 4 hypersensitivity
Term
Merkel cells - epidermis
Definition
Sensory nerve endings/detects light touch/pressure
Term
Macrophages & mast cells - dermis
Definition
Immune function
Term
Histocytes aka macrophage - dermis
Definition
Type of WBC also called macrophages
Pigment and inflammation
Term
Macule
Definition
a flat, curcumscribed, discolored lesion of any size: freckles nevi, measles (if bigger than 1cm - patch, mongolian spots)
Term
Papule
Definition
A solid raised lesion 1cm or less in diameter because of infiltration or hyperplasia of the dermis: warts, lichen planus, nevus. (if greater than 1cm - plaque psoriasis)
Term
Vesicle
Definition
blister, raised, thin wall, fluid-filled (chicken pox or shingles)
Term
Pustule
Definition
A lesion containing a purulent exudate: acne, impetigo (bacterial) --> impetigo may be due to S. aureus.
Term
Plaque
Definition
Large, slightly elevated lesion w/ flat surface. often topped by scale (psoriasis)
Term
Excoriation
Definition
Loss of epidermis with exposed dermis: scratches, scabies
Term
Fissure
Definition
Linear crack or break exposing the dermis (athletes foot --> mycoses are fungal infections such as tinea), cheilosis
Term
Erosion
Definition
Moist, red break in the epidermis; follows rupture of vesicle or bulla; larger than a fissure: chicken pox, diaper dermatitis
Term
Ulcer
Definition
Loss of epidermis and dermis: pressure ulcers
Term
Urticaria --> hives
Definition
Type 1 hypersensitivity - react to allergens
Begins in infancy
Associated with hay fever & asthma
Term
Atopic dermatitis --> Eczema
Definition
Inherited/dry/scaly/temperature affected
Eosinophils & increase IgE indicate allergenic basis
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